There will be no further meetings of Northern Ireland's power-sharing executive - unless there are "exceptional" circumstances - amid a political crisis over the alleged shooting of a man by the Provisional IRA.

Northern Ireland's First Minister Peter Robinson has said "business will not be as usual" until the situation is resolved "satisfactorily".

Father-of-nine Kevin McGuigan was shot outside his home in Belfast, last month, in what is believed to be a revenge attack.

Kevin McGuigan was shot at point blank range in what is thought to be a revenge attack. Credit: PA

Mr Robinson added: "In my view the Assembly is not fit for purpose as it stands today.

"Leaving aside the issue of the Kevin McGuigan murder it still wasn't fit for purpose. So, those issues have to be resolved.

"Unless those issues are resolved we will not have a functioning Assembly and we made it very clear without a resolution to these matters in the talks process our ministers' resignations will follow."

Crisis talks led by the British and Irish governments are due to begin at Stormont on Tuesday.

England fans sang anti-IRA songs during Tuesday's friendly in Italy despite efforts from the Football Association to stamp the chants out in the wake of last year's match in Scotland.

A view of the England fans in Turin on Tuesday night.

England fans caused controversy last November when they chanted "F*** the IRA" during the 3-1 victory at Celtic Park.

Even though the FA liaised with fan groups after the Scotland game to try to prevent such chants happening again, they were heard during England's 1-1 draw at the Juventus Stadium in Turin on Tuesday.

Any repeat during England's next match against the Republic of Ireland in Dublin on June 7 would lead to yet more criticism.

After the win in Scotland, the FA made it clear it was unhappy about the chants.

We apologise for any offence caused by a section of the England support at the match with Scotland. The FA does not condone inappropriate and offensive chanting and intends to meet with supporters' groups to discuss the wider issues.

We have consistently urged supporters to show respect and not to chant songs that could be regarded as insulting to others - particularly from a religious or political perspective.